This baseplate assembly provides a secure and solid mounting platform for large bodied cameras. The tripod plate has enough mounting holes to attach to just about anything, including the offset mounting holes necessary for the ARRI bridge. Two mounting knobs, one on the front and the other on the rear, allow for secure camera mounting of the Sony PMW-F3 with or without tools, most other cameras use a single knob. The Quad Blocks provide vertical adjustment of the iris rods.